Spool bearing for tube frames



Jan. 6, 1925. 1,522,466 v D. s. MUNN E1' AL SPOOL BEARING FOR TUBEFRAMES Filed sept. 2'7.` '192s Patented Jan. 6, 1925'.

UNITED STATES PATENT OFFICE.

DANIEL S. MUNN AND GEORGE GROSSLAND, OF AMSTERDAM, NEW YORK, .ASSIGNOCRST0 MOHAWK CAR-PET MILLS, INC., OF ABESTERDAM, NEW' YORK, A, CORPORATIONO'F NEW YORK.

SPOOL BEARING FOB TUBE FRAMES.

Application filed September 27, 1923.

To @ZZ whom t may concern:

Be it known that we, DANIEL S. MUNN and GEORGE CnossLAND, citizens ofthe United States, and residents of Amsterdam, county of Montgomery,State of New York, have invented certain new and useful Improvements inSpool Bearings for rIube Frames, of which the following is aspecication.

This invention relates to suspension hangers for tube frames and isintended to provide such a device with a yarn spool bearing that will becompletely reliable for the purposeof retaining the spool-journal inposition for rotation as the yarn is drawn off the spool to supply thetufts for weaving, while permitting the easy and quick removal of thespool from its bearing for yarn-receiving or other purposes, whileinvolving no endwise stress upon or displacement of the spool.

Vhile it has been proposed to use a spring bearing arm that can besprung outward far enough to clear the endof the journal7 such devicesare not rigid enough to remain in proper spool-holding position afterthey have been flexed a number of times and, moreover, they can not bereleased while the tube frame is supported in the transfer mechanism bywhich the yarn is presented to the fabric being woven in the loom, sincethe hook-arm is then in its innermost position and would prevent thenecessary outward movement of the spool bearing arm.

The present invention makes possible the use of a rigid spool-supportingarm or member not subject to easy distortion or displacement whilesecuring the retention of the journal therein by positively lockedretaining means which, by its construction. and arrangement, may beinstantly released by the operator to permit removal of the spool.

The invention comprises a suspension hanger provided with aspool-bearing arm or member having an open bearing for the spool journaland a movable keeper so constructed and arranged as to automatically andpositively lock itself to the bearing member when moved to operative orjournal-retaining position, while being releasable therefrom merely byapplication of lateral pressure in the act of opening the bearing forremoval of the spool.

Serial No. 665,192.

By reason of the construction employed there is no need of using anyaccessory spring detent, bolt or the like to retain the keeper in placeyet it is so positively held against unlocking that no accidentalpressure or blow exerted in the direction of the movement of the keeperaway from the spool journal tends to release it.

These and other features of the invention will be explained in detail.in the following portion of the specification and will be deiined in theclaims hereto annexed.

In the accompanying drawings is illustrated a preferred form ofconstruction and arrangement illustrative of the application of theprinciples of this invention, in which:

Figure l is a front elevation of a tube frame for tuft weaving with themiddle portion of the spool and carrier bar broken away, the-spool-bearing member being shown partly in vertical section.

Figure 2 is an end elevation of the suspension hanger with our improvedbearing construction with the carrier bar shown in cross section.

Figure 3 is a plan vievv of the suspension hanger equipped with ourimprovement.

Figure 4 is a detail view showing the journal-retaining member inperspective.

In the drawings, the improved bearing construction is shown applied to aform of tube frame now in commercial use comprising generally alongitudinal tubular carrier bar 10, secured at its opposite end tosuspension hangers each of which comprises a Yvertical hanger arm l,whose upper end is outwardly offset as shown at 2, and projects upwardto form a chain-penetrating extension 3, cooperating with a hook arm l,which is provided at its upper end with a chain-engaging hook 5, andwhich is fulcrumed at its lower end upon a fulcrum pin 7 which is partlyembraced by a reversely bent hook portion G, formed at the lower end ofthe hook arm. rlhe hanger is secured firmly to the tubular carrier barby means of a U-shaped attaching bracket whose upper and lower arms 8,telescope inside of the open end of the carrier bar, and whose middleportion is secured to the suspension hanger by rivets or the like. Thesefeatures, however, form no part of the present invention and are shownmerely for the purpose of making clear the relation of thc j theyarn-spool.,A

The spool-bearing larm l1, is provided at its upper en'diwith a verticalnotch 1 1?.-

which is preferably of y greater depth than the diameter of the'spool-journal, and forms an open' bearingfroinwhich the spool-journalmay be removed bynierely lifting the latter from its seat therein Vwhichpermits the withdrawal of the opposite journal 9, `)from the usualclosed bearing in the spoolbearing arm l2. V 4 f v rl"he 'open bearinglla, 'facilitates a quick removal of the spool 'from its bearings but,obviously, makes it. possible for the spool to drop out when the tubeframe isinverted inthe course of its travel toward or away from'operative position by means Ior its carrier chain`st'ronrwhich it issuspended by means of thevsuspension armsl and 4L. To prevent suchaccidentaldisplacement we have deviseda special construction Vandarrangementv for positivelyl retaining' the spool-journal 9a in its openbearingV 11a.

'lhendeviceY employed for this purpose, Yas

shown in the drawings, 'comprisesa pivotal hook or latch 1 5, ulcrumedupon av pivot stud 1G, secured tothe suspensionchanger near the carrierbar and movable forward and back so that its upward extension'v 15E,willvoverhang the spool-journal 9?, when the keeper 'isin locked oroperative position,

since the low'very edge 15b of theupward extension l5a serves to engagethespo'ol-journal and in eiTect closes the openvbearin'g. j

This keeper is `vpreferably'made Yof sheet steel andvhas a portionadjacent to -theedge 15b, turned outwardly to form aprojecting lug orlip 15, which, as shown` best in Figure il, is inclined forwardly to athinor narrower edge lor point but terminates at its rear enclin anabrupt shoulder. The interlocking projection 15, 'in f the form shown inthe drawings, isshorter than the width of the open bearing or notch11?,.so that this locking member or lip may spring into engagement withthe inside edge of theA open bearingso as toproject therethrough withits abruptv shoulder overlapping the rear vertical edge oi" said slot orbearing While the pressed steel p iece ljlis .fairly stift',nevertheless, it is capable of .swinging inwardly suiiicientlywhenpressed forward with its inclined projection 15Aab riding againstthe inside face ot the bearing mem ber 1l, to allow the shoulder to passby the openingthe bearingto remove the spool,

1s to press inwardly on the `upper end or tong-ue 15a, ofthe keeperwhich 1s madev conveniently longff'or justjthis purpose; therebyspringing the locking Vmember inwardly l out of engagement with thenotch or open bearing and allowingvit tomove easily back#` ward' outofthe path of the spool-journal.Y

The arrangement islsuch lthat the keeper can belocked or unlockedwithout regard tothe position of the hook arm 4, so that the spool canbe removed at -any sta-gelede`-A sired. Awblow or pressure in thedirection that would swing thekeeper backward tov open position ,wouldbe *positively*` resisted by` the positive locking lengagement betweenthe shoulder and the cooperating edge of theV bearing bracket. 'Thekeeper is protected against inward pressure by the fout-v side portion'sof the suspension V,hanger soY that the I described -arrangentimentmakesma very securev and j reliable Ameans for,retain-` ing the bearingspool lnplace, whilemat the same timeaording a device orthis pur'-posewhich can be instantlyreleajsecl'bythe use of only one hand of theoperatoigptherejf by leaving the other handvfree to. grasp the spool orother' part of the tube frame.,

The shoulder,V15?v presents a smooth vberai'j-l.4 ingsurface' totheupperuside of the journal instead offopposing the raw or cut edge ot themetal to resist' the upward thrust of the journal. y

lVhat we claim is:

i l. Aspool bearing'bracket for a tufttube frame embracing in itsclon'stiuctionjan up?l right bearing arm formed at its `upperend with anvupwardly openingbearing recess whose side and bottom e'dgesaffordbearing vsupport rforV an inserted spool journal, a keeper pivotally`mounted to ,swing into position, t'o overhang such inserted journal andprovide ,av retaining bearingfoverthe top vont the journal to preventescape Iofthe journal upward, the pivotal axis` of the keeper beingdisposed` dialnetricallyl op# posite the open sideV of the bearingtoprevent .the iipward thrust of the journal lfrom exerting pressureAagainst the keeper in a diT rection tending tocause the keeperk to moveto journal-releasing position, said ykeeper being formedwith a lateralprojection are ranged to engage an edge of the open bearing to preventaccidental displacement, Substantially as described.

2. A spool bearing bracket for a tuft tube frame, embracing an uprightbearing arm slotted downwardly from its upper end to form an upwardl'coening bearing recess for a spool journa a. re'eper mounted upon thelateral face of said arm by a pivotal connection, said keeper beingformed at its upper end with a hook adapted to overhang an insertedjournal to receive the upward thrust of such journal, said hook beingprovided with a lateral wedge shaped projection whose sloping side tendsto spring the keeper away from the bearing arm when being moved tolocking position and whose abrupt side forms a locking engagement withthe side edge of the bearing recess when the keeper overhangs thejournal, substantially as described.

3. A spool bearing bracket lfor a tuft tube frame embracing in itsconstruction an upright spool bearing arm provided at its upper end withan open bearing recess, a pivotal keeper having one side edge cut awayto forni a journal-engaging edge arranged to overhang a ournal insertedin said bearing, said edge being Jformed with a lateral projection toengage an interior edge of the bearing recess to lock the keeper againstdisplacement, a portion above said journalengaging edge being extendedabove the end of the bearing arm t0 provide a finger hold for shiftingthe keeper into and out '0f locking engagement with the bearing arm,substantially as described.

In witness whereof, we have subscribed the above specification.

DANIEL S. MUNN.

GEORGE CROSSLAND.

